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发明名称
Rectifying means
摘要
申请公布号
US1941421(A)
申请公布日期
1933.12.26
申请号
US19270188730
申请日期
1927.05.04
申请人
OLD COLONY TRUST COMPANY
发明人
SPACTH CHARLES;PEARY HERBERT
分类号
H01J17/00
主分类号
H01J17/00
代理机构
代理人
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地址
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